Dd is 5.8 yo and over the past week to 10 days she seems to be losing alot of her hair. She has quite thick but fine hair and it's everywhere. When I wash it or brush it there is definitely more coming away than usual and this morning her nightdress and sheet was covered in hair. Is she lacking some vitamin do you think or is she just moulting? I'm starting to be a little worried now BTW she had chicken pox in June so could this account for the loss??